Carriage-driving detector



mme F. s. TWOMBLY.

CARRIAGE DRIVING DETECTOR.

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N. PETERS. Pnum-Lnhngnpher. wahingnn. D. c.

4UNITED STATES PATENT OFFICE.

FRANK S. TVOMBLY, OF BARTON LANDING, VERMONT.

CARRIAGE-DRIVING DETECTOR.`

SIEIEICIEICA'ILI0N forming part of Letters Patent No. 280,535, dated July 3, 1883` Application filed May 15, 1883. (No model.) l

. 4.T all tch/0111, it 711,601/ concern:

Be it known that I, FRANK STEELE TwoM- BLY, of Barton Landing, in the county of Or` a longitudinal and horizontal section; Fig. 5,

` way, or race-track.

a longitudinal and vertical section; and Fig.

6, a transverse section ofthe mechanism on either side of the middle of the road or drive way, .there being two such mechanisms to the road. j

The invention is for use in teaching a person to drive a carriage correctly in narrow places or between vehicles, or to detect careless as well as correct driving of a carriage.

In the drawings, A denotes a road, drive- B B are two platforms or pieces of plank arranged at a suitable distance apart, crossing the road, each having applied to it a slide, C, to extend from it at its inner end, and to be movable lengthwise in suoli part B. This slide is provided with a clamp-bolt, c, and nut b to clamp such slide to the part B. Each slide has pivoted to its inner end an arm, D, in manner to admit of the arm being moved from a horizontal up into a vertical position, or thereabout, or "vice versa. This arm may be suitably cushioned, or padded, or covered to prevent it doing injury to a wheel-hub or wheel when struck thereby. Furthermore, there is applied to each block or platform B an adjustable inclined plane, E, wl'lichis movable lengthwise of it, and confined to the platform .by a clamp-bolt, c, and nut d, arranged as represented, the whole being so as to enable the inclined plane to be adjusted to the arm and its supporting-slide in order to prevent a wheel, in passing, from doing injury to the latter.

In using the mechanisms above described applied to a track or drive-way the arms are to be turned up into vertical positions and adjusted at a distance apart a little greater than the distance between the outer ends of the hubs of the two wheels of the aXle of a carriage to be driven between the arms.

The driver ofthe team or carriage, while going at speed, is to drive, if possible, the vehicle between the two arms without contact with either. In case of striking either of them with a wheel on thehub of the carriage the arm will be easily thrown down without injury to the carriage. Bad or careless driving will be detected by the falling of either arm, good driving being apparent when the carriage may be driven fast between the arms without knocking either of them down. By practice in this way a coachman or person can soon learn to drive a vehicle in narrow places or between other vehicles on a road, or pass another vehicle very closely Vwithout coming into contact therewith.

l claiml. The combination, with the drive or road way, of the two arms arranged therewith, and pivoted so as to be capable of being easily turned up into vertical positions, and of falling. therefrom under circumstances as set forth. Y

2. The combination of the platform B, the adjustable slide C, and the arm D, pivoted to the latter, all being arranged, andthe slide and platform being provided with means of clamping them together, as explained.,

3. The combination of the adjustable inclined plane and its clamping device with the platform and its adjustable slide, and the arm pivoted to the latter, all being adapted sub stantially in manner and to operate as and for the purpose set forth.

FRANK STEELE TVOlllBLY.

Vitnesses:

R. H. EDDY,

E. B. PRATT. 

